[all-commits] [llvm/llvm-project] a94eb2: [HashRecognize] Fix big-endian CRC tables (#144754)

[Ramkumar Ramachandra via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: a94eb27a29ef3aee5ccafc1d7bebee1c8efbaf38
      https://github.com/llvm/llvm-project/commit/a94eb27a29ef3aee5ccafc1d7bebee1c8efbaf38
  Author: Ramkumar Ramachandra <ramkumar.ramachandra at codasip.com>
  Date:   2025-06-18 (Wed, 18 Jun 2025)

  Changed paths:
    M llvm/lib/Analysis/HashRecognize.cpp
    M llvm/test/Analysis/HashRecognize/cyclic-redundancy-check.ll

  Log Message:
  -----------
  [HashRecognize] Fix big-endian CRC tables (#144754)

Big-endian CRC tables are incorrect due to the initial value of CRC in
genSarwateTable being hard-coded for CRC-8. 128 is the signed-min value
for CRC-8, but it should be generalized to APInt::getSignedMinValue. The
issue was found when writing CRC verification tests for llvm-test-suite.



To unsubscribe from these emails, change your notification settings at https://github.com/llvm/llvm-project/settings/notifications